查询词典 contamination

Attacked by surface active agent, ocean micro-alga will be change their coloring matter for photosynthesis under the contamination of surface active agent, to result much phaeophytin-a.In addition, have assayed the surface property of the four kinds of surface-active agent.

在此基础上初步研究了表面活性剂对海洋微藻的毒性机理，找到了表面活性剂对海洋微藻细胞的攻击点是藻类的细胞膜，并且胁迫状态下的藻类细胞的光合色素组成发生变化，产生大量的脱镁叶绿素a，影响藻类的光合作用效率。

Are there sufficient cleaning procedures to prevent contamination of product assuming that you deliver different products in the same tank truck?

是否有适当之书面清洗程序以防止用同一槽车运送不同产品所造成之污染？

Therefore, the thermoluminescence curve characteristics of the fish otoliths are quite sensitive to water quality and water environment, and this can be regarded as an important indicator to the contamination degree of the water.

研究结果表明，鱼耳石的热释光曲线特征对鱼所生长的水体水质和水环境相当敏感，通过更深入研究，可能成为水质和水环境的重要标型。

Thirdhand smoke is residual tobacco smoke contamination that remains after the cigarette is extinguished.

吸烟的人习惯车内吸烟，或者当孩子出去的时候在家中吸烟，他们以为这样孩子们吸不到二手烟，就不会对孩子的健康造成危害。

Basalts plot in tholeiite in A.I-Al〓O〓 diagram. They have enriched LREE patterns without negative Eu anomaly. Their Zr/Y=4.4～6.5,〓=0.70790～0.70146, Th＞＞Ta,εNd values are between -1.8 and +3.7, indicating continental contamination. Pb isotope characteristics are close to that of typical tholeiitic flood basalt in the world.

Al〓O〓图上落入拉斑玄武岩区；稀土配分为LREE富集型，均无负Eu异常，Zr/Y＝4.4-6.5，〓＝0.70790～0.70146；Th＞＞Ta，ε〓介于-1.80～+3.7之间，都显示了陆壳混染的影响，Pb同位素与世界上典型拉斑质溢流玄武岩比较接近。

The garbage contamination has threatened people's health and become a thorny problem in city's development.

废物污染已威胁了我们的健康，并且在城市发展中已成为一个难题。

In the process of mining, milling and steel and rare earth melting, thoron element was released to the accessible environment together with smoke, wastewater and disposed slag, leading to radioactive contamination to the environment.

在采矿、选矿、钢铁和稀土冶炼等生产中，钍元素随烟尘、废水和废渣排放至环境中，造成放射性污染。

Sundlof said the FDA found an amount of melamine, a chemical used in the production of plastics and fertilizer,"10 thousand-fold less than the amounts associated with the Chinese infant formula contamination."

孙德夫说，美国食品和药品管理局发现少量的三聚氰胺是"同类中国奶粉的万分之一。"三聚氰胺常被用于生产塑料和化肥。

Doing so can maximize your TIG welding success and is one of the best defenses against contamination and rework.

这样才能最大限度TIG焊成功和你是最好的防感染和返工。

Objective In order to explore the status of environmental contamination in traffic toll gate .

目的 探讨道路收费站作业环境污染程度。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。